The Division of Water Supply & Geoscience works to ensure New Jersey’s water supply is adequate, reliable, safe and available for the future. DWSG regulates ground and surface water diversions and associated infrastructure for drinking, agriculture, industry, irrigation, and other uses while providing drinking water financial, licensing and training support. DWSG collects, analyzes and maps geologic, hydrologic and quality data for planning long-term water availability to minimize drought and other emergencies.